m4_define(`hm_rv_fd',`
hm_rv_succfail
if (!r) {
- for (;;) {
- assert(r < 1000);
- if (r >= fdtab.used)
- if (!adns__vbuf_append(&fdtab,"\0",1)) Tnomem();
- assert(r < fdtab.used);
- if (!(fdtab.buf[r] & FDF_OPEN)) break;
- r++;
+ int newfd;
+ P_READ(newfd);
+ if (newfd<0 || newfd>1000) Pformat("new fd out of range");
+ adns__vbuf_ensure(&fdtab, newfd+1);
+ if (fdtab.used <= newfd) {
+ memset(fdtab.buf+fdtab.used, 0, newfd+1-fdtab.used);
+ fdtab.used= newfd+1;
}
- fdtab.buf[r] |= FDF_OPEN;
+ if (fdtab.buf[newfd]) Pformat("new fd already in use");
+ fdtab.buf[newfd] |= FDF_OPEN;
+ r= newfd;
}
')
$2